Integrated transmitter/receiver apparatus (monolithic integratio

Details Integrated transmitter/receiver apparatus (monolithic integratio Integrated transmitter/receiver apparatus (monolithic integratio

1996-11-06

2000-05-02

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 84, 455574, H04B 144

Patent

active

060582928

ABSTRACT:
A radio transceiver having a receive mode and transmit mode is disclosed. The transceiver makes use of an application controller to control the operation of the transmitter and receiver portions of the transceiver. The application controller enables the control of a voltage source connected to the transmitter portion to vary the amplification gain of the transmitter section. The output of the transmitter and the input of the receiver are connected directly to the antenna circuit without the use of a duplexer. An oscillator circuit provides a transmission carrier during transmission and is used to convert signal frequency during reception of a signal. The controller can switch between the transmitting and receiving functions by activating and de-activating either one of the transmitter and receiver sections of the radio transceiver.

REFERENCES:
patent: 3988675 (1976-10-01), Dykas
patent: 4194153 (1980-03-01), Masaki et al.
patent: 4290026 (1981-09-01), Shoji
patent: 5146613 (1992-09-01), Anderson
patent: 5251331 (1993-10-01), Schwent et al.
patent: 5390357 (1995-02-01), Nobusawa et al.
patent: 5515036 (1996-05-01), Waraksa

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